yydecode started life as a decoder for yEnc encoded binaries, which
have recently appeared on Usenet. yydecode works almost identically to
the infamous uudecode program. Version 0.2.8 and onwards contains a
superset of uudecode's functionality, (ie. decodes standard uuencoded
files, as well as Base64 [RFC2045] encoded files produced by uuencode)
and hence can be used as a drop-in replacement in all circumstances.
Given a selection of parts saved by your newsreader across msg-1.txt,
msg-2.txt and msg-3.txt, any of the following (plus many more varia-
tions on the incantation) will correctly decode the file(s):
$ yydecode msg-1.txt msg-2.txt msg-3.txt
$ cat msg-1.txt msg-2.txt msg-3.txt | yydecode